Patents Examined by Devon A Joseph
  • Patent number: 10079565
    Abstract: An electrically-driven vehicle includes: a battery; an induction motor connected to the battery; a synchronous motor connected to the battery that is connected to the induction motor; and at least one electronic control unit configured to change a slip frequency command of the induction motor based on a predetermined frequency of current fluctuation when a temperature of the battery is low such that an amplitude of the current fluctuation increases, the current fluctuation being any one of current fluctuation of a battery current or current fluctuation of a battery-related current that relates to the battery current.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: September 18, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Takashi Ota
  • Patent number: 10079568
    Abstract: A rotary electric machine control device for a rotary electric machine having winding sets with coils includes: an inverter for each winding set; a power source relay for each inverter; a terminal voltage detector detecting a terminal voltage of each coil; and a controller including an inverter controller, a relay controller and an abnormality determination unit. Each winding set and a corresponding inverter provides a system. When the rotary electric machine is driven using a normal system: the relay controller controls the power source relay to cut off power supply from a power source to the inverter in an abnormal system; the abnormality determination unit specifies a short-circuited location based on the terminal voltage in the abnormal system; and the inverter controller corrects a command value related to control of the inverter in the normal system according to a specified short-circuited location.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: September 18, 2018
    Assignee: DENSO CORPORATION
    Inventor: Takashi Suzuki
  • Patent number: 10065530
    Abstract: A method for configuring a controller to operate a motor to position a seat, in which the controller includes an integrated current sensor and the seat includes a latch operatively coupled to the motor, includes determining an operating profile of the motor under one or more operating conditions, wherein the operating profile represents motor current values during activation of the latch, and wherein the activation of the latch includes at least one latch pulling condition and one latch release condition. The method further includes analyzing the operating profile in order to correlate the profile to the position of the latch. The method also includes loading the controller with instructions to enable comparison of a real-time current measured by the integrated current sensor to the stored operating profile, wherein the analysis enables determination of the latch condition in real-time.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 4, 2018
    Assignee: LEGGETT & PLATT CANADA CO.
    Inventors: Xiao Ming Zhao, Renato Colja, Horia Blendea
  • Patent number: 10063177
    Abstract: The present invention is to adjust the relevant parameters at the variable load factor of the motor of the electric vehicle and the arbitrary rotational speed through the optimization algorithm and to operate with high efficiency over the whole range. In order to optimize the efficiency of the motor for the electric vehicle, the optimization control device 20 obtains the operating load factor in real time with the algorithm 9 for calculating the load factor, the rotation speed ? is obtained by ? detection 6, the power factor PF is acquired by the PF calculation 4, and the torque current component Iq and the magnetic field current component Id are acquired by the Id and Iq conversion algorithm 5, respectively.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: August 28, 2018
    Inventor: Ikoku Shino
  • Patent number: 10056752
    Abstract: A rotary electric machine for a vehicle is provided. The rotary electric machine includes a power system circuit which has a power element and is grounded via a first ground terminal and a first connecting line and a control system circuit which controls the power system circuit and is grounded via a second ground terminal and a second connecting line.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: August 21, 2018
    Assignee: DENSO CORPORATION
    Inventors: Harumi Horihata, Tadatoshi Asada, Takahisa Koyasu
  • Patent number: 10046644
    Abstract: Systems and methods for energy storage and management may be useful for a variety of applications, including launch devices. A system can include a direct current (DC) bus configured to operate within a predetermined range of voltages. The system can also include an array comprising a plurality of ultra-capacitors connected to the DC bus and configured to supply the DC bus with energy. The system can further include an input configured to receive energy from a power grid, wherein the power grid is configured to supply fewer than 250 amps of power. The system can additionally include an output configured to supply more than 250 amps of power. The system can also include a controller configured to control charging and discharging of the array of ultra-capacitors and configured to control the DC bus to remain within the predetermined range of voltages.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: August 14, 2018
    Assignee: Velocity Magnetics, Inc.
    Inventor: Domenic P. Marzano
  • Patent number: 10018677
    Abstract: A motor controller includes a single-rotation signal detector detecting a single-rotation signal that indicates a single rotation of a main spindle, a rotation angle detector detecting a rotation angle of a motor every predetermined time, and a counter adding up the rotation angle. A value of the counter is reset when the single-rotation signal detector detects the single-rotation signal of the main spindle. The motor controller further includes a judgment unit judging that a power transmission unit has abnormality when a value of the rotation angle of the motor added up in the counter deviates from a predetermined range.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: July 10, 2018
    Assignee: FANUC CORPORATION
    Inventor: Genzou Naitou
  • Patent number: 10020755
    Abstract: A power inverter includes a multi-phase inverter circuit electrically connected to positive and negative conductors of the high-voltage bus. A bi-stable switch is electrically connected in series with a discharge resistor between the positive and negative conductors of the high-voltage bus, and a capacitor is electrically connected between the positive and negative conductors of the high-voltage bus. First and second trigger circuits are in communication with a gate of the bi-stable switch, and first and second contactors are controllable to electrically connect a respective one of the positive and negative conductors of the high-voltage bus to the high-voltage DC power source. The bi-stable switch is controllable to provide a low-impedance electric current flow path through the discharge resistor between the positive and negative conductors of the high-voltage bus in response to an activation signal from one of the first and second high-voltage DC contactor circuits.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: July 10, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Andrew J. Namou, Mohammad N. Anwar, Ahmad Albanna, Syed M. Kadry
  • Patent number: 10003293
    Abstract: Systems and methods for driving a motor are provided. One implementation of a drive system comprises a user interface, a variable speed drive, and a controller. The user interface enables a user to select an operating frequency set point and an operating voltage set point. The operating frequency set point is selected from a range of frequency set points and the operating voltage set point is selected from a range of voltage set points. The variable speed drive is configured to drive a motor at the selected operating frequency set point and selected operating voltage set point. The controller is configured to receive input from the user interface and control the operating frequency and operating voltage of the variable speed drive.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 19, 2018
    Inventors: Andrew John Bartlik, Charles Thomas McLees, Jr.
  • Patent number: 9998052
    Abstract: The magnetic pole position of a rotary electric machine is electrically derived accurately by reducing a voltage error due to a dead time while suppressing the influence on the operation efficiency of the rotary electric machine. A control device performs dead-time compensation, and performs current feedback control in a d-q-axis vector coordinate system using a magnetic pole position computed on the basis of an induced voltage produced by rotation of a rotor or on the basis of a response component to a high-frequency observation signal applied to the rotary electric machine. In the case where the rotary electric machine is controlled by deciding current commands Id*, Iq* in the d-q-axis vector coordinate system, the rotary electric machine control device controls the rotary electric machine such that the magnitude of an armature current Ia becomes equal to or more than a lower-limit current Ia_min prescribed in advance.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: June 12, 2018
    Assignee: AISIN AW CO., LTD.
    Inventors: Arinori Shimada, Masashi Miyazaki, Subrata Saha, Keisuke Nishimura, Ken Iwatsuki
  • Patent number: 9991835
    Abstract: A control device for an electric compressor, capable of successfully controlling a drive motor of the compressor in response to the load fluctuation having complicated frequency components even when the motor is controlled in a sensorless manner, is provided.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: June 5, 2018
    Assignees: CALSONIC KANSEI CORPORATION, UTSUNOMIYA UNIVERSITY
    Inventors: Kensuke Osamura, Yousuke Ooneda, Mitsuo Hirata, Naoya Tashiro
  • Patent number: 9991829
    Abstract: A direct-axis current protection method and device for a permanent magnet synchronous motor drive system. The method includes: pre-calculating the direct-axis current of the next moment according to the current voltage transmitted from an inverter to a permanent magnet synchronous motor (PMSM); comparing the direct-axis current of the next moment with a maximum protection current; if the direct-axis current of the next moment is less than the maximum protection current, continuing transmitting the current voltage to the PMSM; if the direct axis current of the next moment is greater than or equal to the maximum protection current, redistributing the voltage according to a protection direct-axis current and a protection quadrature-axis current, and transmitting the redistributed voltage to the PMSM. The direct-axis current of the next moment is tended to be normal by adjusting the voltage.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: June 5, 2018
    Assignee: CSR ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.
    Inventors: Jianghua Feng, Kean Liu, Junfeng Xu, Yaping He, Yuliang Wen, Jing Shang, Chaoyang Zhang, Xiong Liu
  • Patent number: 9979341
    Abstract: Methods and systems for programming an electric motor are provided. An electric motor controller configured to be coupled to an electric motor is configured to control the electric motor to produce torque when direct current (DC) link voltage has up to 100% voltage ripple. The controller includes a first power input, a second power input, and a third power input, an energized line detection device, and a microprocessor. Each power input is configured to receive power from an alternating current (AC) power source. The energized line detection device is configured to sense which power input has received power from the AC power source and output an isolated signal. The microprocessor is coupled downstream from the energized line detection device and is configured to determine an operating profile for the electric motor based on the isolated signal.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 22, 2018
    Assignee: Regal Beloit America, Inc.
    Inventors: Roger Carlos Becerra, Ludovic Andre Chretien, Glen Chester Young
  • Patent number: 9973126
    Abstract: Systems and methods for controlling the operating speed and the torque of an electric motor using an operational model are described. An operational model for the electric motor, including a plot of engine performance parameters, is used for reference, and a most efficient output path, which may pass through an optimal operation region in the operational model, is selected. The most efficient output path may be determined, for example, according to locations of a current output state and a to-be-reached target state in the operational model, enabling the operating state of the motor to reach the target state from the current operating state. By selecting a more efficient output path, the operating efficiency of the motor may be optimized, the life of a battery improved and/or the operating mileage of the vehicle may be increased, without significantly reducing the driving experience.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: May 15, 2018
    Assignee: THUNDER POWER NEW ENERGY VEHICLE DEVELOPMENT COMPANY LIMITED
    Inventor: Sheng-Fu Lai
  • Patent number: 9964582
    Abstract: A motor control device includes a current command calculation unit configured to calculate a current command value for driving a motor, a current detection unit configured to detect a value of a current that flows through a power line of the motor, a current deviation calculation unit configured to calculate a current deviation, which is a difference between the current command value and the detected current value, a voltage command calculation unit configured to calculate a voltage command value applied to the motor based on the current deviation, a filter processing unit configured to calculate data by filtering the current deviation, the absolute value of the current deviation, or the power of the current deviation and to output the data as index data, and a power line breakage detection unit configured to detect a breakage of the power line based on the index data.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: May 8, 2018
    Assignee: FANUC CORPORATION
    Inventors: Tomohisa Tsutsumi, Yuuki Morita
  • Patent number: 9966889
    Abstract: Representative implementations of devices and techniques provide optimized control of a three-phase AC motor. A field oriented control (FOC) arrangement uses optimization components and techniques to improve power efficiency of the motor, with fast control response over a full range of motor speeds.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: May 8, 2018
    Assignee: Infineon Technologies AG
    Inventors: Tao Zhao, Arno Rabenstein, Theng Kiong Gan, Choon Keat Kok
  • Patent number: 9954472
    Abstract: A control apparatus for an AC rotary machine includes a current detection unit that detects a current of a first winding and a current of a second winding, a basic voltage calculation unit that calculates a basic voltage on the basis of a current command value, a first voltage calculation unit that calculates a voltage command value of the first winding on the basis of the current command value, the basic voltage, and the current of the first winding, and a second voltage calculation unit that calculates a voltage command value of the second winding on the basis of the current command value, the basic voltage, and the current of the second winding. At least the first voltage calculation unit calculates the voltage command value of the first winding by further taking into account the current of the second winding.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: April 24, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Akira Furukawa, Yoshihiko Kimpara, Isao Kezobo
  • Patent number: 9950632
    Abstract: A motor drive device includes a bridge circuit 10 having a plurality of legs with switch elements 101 in upper and lower arms. High frequency AC voltage output from the bridge circuit 10, when it is connected to an AC power supply 1, is converted into a DC voltage via a transformer 21 and an AC/DC conversion circuit 11, thus charging the battery 2. Also, the DC voltage of the battery 2 is converted into an AC voltage by the bridge circuit 10 when the AC power supply 1 is cut off from the bridge circuit 10, and supplied to the alternating current motor 3. Because of this, the isolating transformer 21 can be driven at high frequency while the motor driving power conversion circuit is also used for battery charging, and a reduction in size and reduction in cost of the overall device are achieved.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: April 24, 2018
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Hiroki Katsumata, Masakazu Gekinozu
  • Patent number: 9902290
    Abstract: Disclosed is a reversing device for a motorcycle, including: a housing having first and second output holes; a first output shaft installed in the housing through the first output hole; a second output shaft installed in the housing through the second output hole; a motor supplying power to the first output shaft or the second output shaft; a first solenoid supplying operating power to the first output shaft; a second solenoid supplying operating power to the second output shaft; a decelerating part decelerating the power of the motor to transmit the decelerated power to the second output shaft; and a controller transmitting a driving signal to the motor, the first solenoid or the second solenoid.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: February 27, 2018
    Inventor: Baek In Lee
  • Patent number: 9906173
    Abstract: A method for estimating a motor parameter in a load commutated inverter arrangement, including the steps of: measuring a motor side ac-voltage; detecting commutation interval information of the measured motor side ac-voltage; estimating a motor parameter based on the detected commutation interval information; and indicating when the estimated motor parameter deviates from a monitoring parameter thereof.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: February 27, 2018
    Assignee: ABB Schweiz AG
    Inventors: Jan Wiik, Edgar Jellum, Trond Haugen, Harald Fretheim